Port the original #27 detected-language pipeline onto the verified PR #39 prerequisite while preserving the current-main conversation instrument and host continuity changes.
Keep voice selection server-side with no user selector or client voice field. Reuse 207c16ab only for its stricter exact-code trust boundary, omitting malformed or absent language so Piper defaults to Amy.
Supersede draft PR #26 with a merge-safe prerequisite: bake and preload the amy, irina, and claude Piper models, route only validated server-side language to fixed voices, and leave the live voice deployment manifest unchanged.
Remove the pinned WebUI speaker selector and its persisted preference, omit client voice fields from every outbound TTS path, and keep hands-free Voice Mode and the conversation instrument intact. Hostile or legacy voice fields remain ignored by the Piper server.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
